1_CourseInfo_COMP3322B_s2019.pdf - COMP 3322B Modern...

COMP 3322B
Modern Technologies
on World Wide Web
Course Overview
Dr. C Wu
Department of Computer Science
The University of Hong Kong
2nd semester 2018-2019

Internet and the WWW
Internet Users in the World (1995-2018)
0
1250
2500
3750
5000
Dec 1995 Jul 2000 Jul 2002 February, 2004 Dec, 2006 June, 2008 Dec, 2009 Dec 2011 Jun 2014 Jun 2018
Millions of Users
Source:

How do you get online?
Launch a browser
Type in a URL and
then press enter

Internet
a global system of interconnected computer networks that use
the Internet protocol suite to link devices worldwide
A network of networks
World Wide Web
abbreviated as WWW or W3 ; commonly known as the Web
it is the largest Internet application
it is an information space where documents and other web
resources are identified by URIs , interlinked by hypertext
links, and can be accessed via the Internet

File:NeXTcube_first_webserver.JPG

Outcome 1 [Internet Technologies] :
be able to master the key
technologies for transferring data and control over the Internet.
Internet
?
How do these machines communicate with each other
Internet protocol stack: HTTP, IP
Applications: DNS

Static web pages
HTML, CSS
HTTP request (URL, e.g.
Web server Client (web browser)
A web server is a computer
program that delivers
content, such as web pages,
using the Hypertext Transfer
Protocol (HTTP) over the
Internet.